JPH01258851A - Method for preheating refractory for bidirectional drawing type horizontal continuous casting machine - Google Patents
Method for preheating refractory for bidirectional drawing type horizontal continuous casting machineInfo
- Publication number
- JPH01258851A JPH01258851A JP8656588A JP8656588A JPH01258851A JP H01258851 A JPH01258851 A JP H01258851A JP 8656588 A JP8656588 A JP 8656588A JP 8656588 A JP8656588 A JP 8656588A JP H01258851 A JPH01258851 A JP H01258851A
- Authority
- JP
- Japan
- Prior art keywords
- feed nozzle
- mold
- tundish
- injector
- continuous casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009749 continuous casting Methods 0.000 title claims description 13
- 230000002457 bidirectional effect Effects 0.000 title claims description 8
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000000567 combustion gas Substances 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
- B22D11/0455—Bidirectional horizontal casting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は双方向引抜型水平連鋳機の耐火物予熱方法に係
り、特にタンディツシュとフィードノズルを同時に低コ
ストで予熱できる方法に関し、水平連鋳の分野で利用さ
れる。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a refractory preheating method for a bidirectional drawing type horizontal continuous casting machine, and particularly relates to a method for preheating a tundish and a feed nozzle simultaneously at low cost. Used in the field of casting.
双方向引抜型水平連鋳機を第２図の模式断面図により説
明する。タンディツシュ２内の溶融金属４はフィードノ
ズル６を介して鋳型８の中に供給され、鋳型８内で生成
された凝固シェル１ｏは、双方向に引抜かれることによ
り連続的に鋳造される。鋳型８は鋳型網版１２および鋳
型フレーム１４から構成されているが、鋳型８への注入
に際し溶融金属４の２次酸化を防止し、鋳型内溶融金属
静圧を保持する目的から鋳型銅板１２、フィードノズル
６、タンディツシュ２等は一体に結合されている。The bidirectional drawing type horizontal continuous casting machine will be explained with reference to the schematic cross-sectional view of FIG. The molten metal 4 in the tundish 2 is fed into the mold 8 through the feed nozzle 6, and the solidified shell 1o produced in the mold 8 is continuously cast by being drawn out in both directions. The mold 8 is composed of a mold mesh plate 12 and a mold frame 14, and the mold copper plate 12, The feed nozzle 6, the tundish 2, etc. are integrally connected.
連続鋳造においては、鋳込開始前にタンディツシュ２お
よびフィードノズル６を予熱するが、特開昭５７−２８
６５９号公報に開示されている如く、タンディツシュ２
を燃焼ガスで予熱し、引続いてこの燃焼ガスをフィード
ノズル６に通過させてフィードノズル６を同時に予熱す
る方法が効率の良い点から広く利用されている。In continuous casting, the tundish 2 and feed nozzle 6 are preheated before the start of casting.
As disclosed in Publication No. 659, Tanditshu 2
A method of preheating the combustion gas with combustion gas and then passing the combustion gas through the feed nozzle 6 to preheat the feed nozzle 6 at the same time is widely used due to its high efficiency.
しかし、水平連鋳機は上記の如く鋳型８、フィードノズ
ル６およびタンディツシュ２等は一体に結合されており
、一方、上記の予熱後の排ガスは比較的多量の水分を含
有しているので、フィードノズル６を予熱した排ガスが
鋳型８内に入り鋳型銅板１２に接すると水滴として結露
する。この状態で鋳込みを開始すると鋳型８内で水蒸気
爆発が発生し危険である。However, in the horizontal continuous casting machine, the mold 8, feed nozzle 6, tundish 2, etc. are integrally connected as described above, and on the other hand, the exhaust gas after the above-mentioned preheating contains a relatively large amount of moisture, so the feed When the exhaust gas that has been preheated by the nozzle 6 enters the mold 8 and contacts the mold copper plate 12, it condenses as water droplets. If casting is started in this state, a steam explosion will occur within the mold 8, which is dangerous.
鋳型２に予熱排ガスの侵入を防止するため、特開昭５８
−３５４号公報においては、タンディツシュ出口耐火物
と鋳型入口耐火物との間に金属箔を挟んで、予熱時に排
ガスが鋳型に侵入するのを防止しているが、鋳型入口耐
火物であるフィードノズル耐火物が予熱されていないの
で、鋳込み開始時にフィードノズルがスポール損傷をす
る問題があった。In order to prevent preheating exhaust gas from entering the mold 2,
In Publication No. 354, a metal foil is sandwiched between the tundish outlet refractory and the mold inlet refractory to prevent exhaust gas from entering the mold during preheating, but the feed nozzle, which is the mold inlet refractory, Since the refractory was not preheated, there was a problem that the feed nozzle would be damaged by a spall at the start of casting.
また、電熱線によるタンディツシュ等の予熱は、燃焼ガ
スに比して水分は少ないが、一体構造のため高熱の電熱
線の配設が困難である上、熱量の関係上、十分な予熱が
できない等の問題がある。In addition, preheating tandice etc. with heating wires has less moisture than combustion gas, but due to the integrated structure, it is difficult to install high-heat heating wires, and due to the amount of heat, sufficient preheating cannot be achieved. There is a problem.
本発明の目的は、上記従来技術の問題点を解決し、燃焼
ガスでタンディツシュおよびフィードノズルを同時に予
熱し、鋳型内への水分付着を防止できる水平連鋳機の耐
火物予熱方法を提供するにある。An object of the present invention is to solve the problems of the prior art described above, and to provide a method for preheating refractories for a horizontal continuous casting machine, which can simultaneously preheat the tundish and feed nozzle with combustion gas and prevent moisture from adhering to the inside of the mold. be.
〔問題点を解決するための手段および作用〕本発明の要
旨とするところは次の如くである。[Means and operations for solving the problems] The gist of the present invention is as follows.
すなわち、タンディツシュ、フィードノズルおよび鋳型
が一体に結合されている双方向引抜型水平連鋳機の耐火
物予熱方法において、前記タンディツシュを燃焼ガスに
て予熱し、同時にインジェクターを使用して前記燃焼ガ
スをフィードノズルを経て吸引してフィードノズルを予
熱し、排ガスを鋳型と接触させずに系外に排出すること
を特徴とする双方向引抜型水平連鋳機の耐火物予熱方法
である。That is, in a refractory preheating method for a bidirectional drawing type horizontal continuous casting machine in which a tundish, a feed nozzle, and a mold are integrally connected, the tundish is preheated with combustion gas, and at the same time, the combustion gas is injected using an injector. This is a refractory preheating method for a bidirectional drawing type horizontal continuous casting machine, which is characterized in that the feed nozzle is preheated by suction through the feed nozzle, and the exhaust gas is discharged to the outside of the system without coming into contact with the mold.
本発明法で使用する装置を第１図で説明する。The apparatus used in the method of the present invention will be explained with reference to FIG.
鋳型８の中にはインジェクター１６が設けられている。An injector 16 is provided within the mold 8.
インジェクター１６の水平部には空気噴出口１８が設け
られフィードノズル６の直下にはその下面からｄ２の空
隙を有して垂直方向のガス吸込口２０が設けられ、イン
ジェクター１６のガス排出口２２は鋳型８の外に位置し
ている。An air outlet 18 is provided in the horizontal part of the injector 16, a vertical gas inlet 20 is provided directly below the feed nozzle 6 with a gap of d2 from the bottom surface, and a gas outlet 22 of the injector 16 is provided. It is located outside the mold 8.
本発明法の詳細を第１図によって説明する。The details of the method of the present invention will be explained with reference to FIG.
タンディツシュ２をバーナー２４にて加熱し、同時に鋳
型８内にインジェクター１６を作動してタンディツシュ
２のバーナー２４の燃焼ガスをフィードノズル６を経て
吸引してフィードノズル６を加熱する。インジェクター
１６はフィードノズル６とガス吸込口２０の空隙ｄ２か
ら鋳型８内の空気と共に燃焼ガスを吸引して系外に排出
するので。The tundish 2 is heated by a burner 24, and at the same time, the injector 16 is operated in the mold 8 to suck combustion gas from the burner 24 of the tundish 2 through the feed nozzle 6, thereby heating the feed nozzle 6. The injector 16 sucks the combustion gas together with the air in the mold 8 through the gap d2 between the feed nozzle 6 and the gas suction port 20, and discharges it to the outside of the system.
鋳型２と燃焼ガスの接触を避け、鋳型２への水分付着を
防止し、タンディツシュ２とフィードノズル６を完全に
予熱することができる。Contact between the mold 2 and combustion gas can be avoided, moisture adhesion to the mold 2 can be prevented, and the tundish 2 and feed nozzle 6 can be completely preheated.
なお、本発明の作用、効果を高めるためには、次の関係
が重要である。すなわち、
ｄ、・・・フィードノズル６の内径
ｄ１・・・フィードノズル６の直下に対応するインジェ
クター１６の垂直方向のガス吸込口２０の内径
ｄ２・・・フィードノズル６の下面とガス吸込口２０の
上面の空隙距離
ｄ、・・・インジェクター６の水平部内径Ｈ・・・鋳型
８の内部高さ
とすればガスの通過を容易にし、排ガスの鋳型２内への
漏洩を防止し、空気を吸入してインジェクター１６の温
度を低下するためには次の関係が必要である。In addition, in order to enhance the action and effect of the present invention, the following relationship is important. That is, d, ... Inner diameter d1 of the feed nozzle 6 ... Inner diameter d2 of the vertical gas suction port 20 of the injector 16 corresponding to the position immediately below the feed nozzle 6 ... The lower surface of the feed nozzle 6 and the gas suction port 20 The gap distance d on the top surface, the horizontal inner diameter H of the injector 6, the internal height of the mold 8, facilitates the passage of gas, prevents exhaust gas from leaking into the mold 2, and sucks air. In order to lower the temperature of the injector 16 by increasing the temperature of the injector 16, the following relationship is required.
ｄ、（ｄｌ ・・・・・・・・・・・・・・・ （
１）また、ガスの通過を容易にし、インジェクター１６
を鋳型２内に収容するために次の式を満足しなければな
らぬ。d, (dl ・・・・・・・・・・・・・・・ (
1) It also facilitates the passage of gas and the injector 16
In order to accommodate this in the mold 2, the following formula must be satisfied.
ｄｏくｄ、くＨ・・・・・・・・・・・・ （２）更
に、空隙ｄ、は次の範囲が望ましいｅｄ２は小さ過ぎる
とインジェクター１６内の排ガス温度が高温になり、大
き過ぎると排ガスの吸引力が低下するからである。dokud,kuH・・・・・・・・・・・・ (2) Furthermore, it is preferable that the gap d is in the following range.If ed2 is too small, the exhaust gas temperature in the injector 16 will become high, and if it is too large. This is because the suction power of exhaust gas decreases.
０ 、１ ＞ ＜ ｄ 、 ＜ ４ （１ｍ・・・・・
・・・・・・・（３）従って、本発明の効果を最大にす
るためには、上記（１）、（２）、（３）の（３）式を
同時に満足させることが必要である。0, 1 >< d, < 4 (1m...
(3) Therefore, in order to maximize the effects of the present invention, it is necessary to simultaneously satisfy equation (3) of the above (1), (2), and (3). .
本発明はタンディツシュを燃焼ガスで予熱し、同時に燃
焼ガスをインジェクターでフィードノズルを経て吸引し
てフィードノズルを加熱し、鋳型と接触なしに排ガスを
系外に排出することによって次の効果を挙げることがで
きた。The present invention provides the following effects by preheating the tundish with combustion gas, at the same time drawing the combustion gas through the feed nozzle with an injector to heat the feed nozzle, and discharging the exhaust gas outside the system without contacting the mold. was completed.
（イ） タンディツシュおよびフィードノズルを同時に
燃焼ガスを使用して安価に完全に予熱することができた
。(a) It was possible to completely preheat the tundish and feed nozzle simultaneously at low cost using combustion gas.
（ロ）鋳型内の排ガスによる水分付者を防止し、安全な
鋳造作業が可能になった。(b) Safe casting work is now possible by preventing moisture from entering the mold due to exhaust gas.
第１図は本発明実施例を説明するための水平連鋳機の断
面図、第２図は双方向引抜型水平連鋳機の模式断面図で
ある。
２・・・タンディツシュ ６・・・フィードノズル
８・・・鋳型 １６・・・インジェクター
２０・・・ガス吸込口 ２２・・・ガス排出口２
４・・・バーナーFIG. 1 is a sectional view of a horizontal continuous casting machine for explaining an embodiment of the present invention, and FIG. 2 is a schematic sectional view of a bidirectional drawing type horizontal continuous casting machine. 2...Tandish 6...Feed nozzle 8...Mold 16...Injector 20...Gas suction port 22...Gas discharge port 2
4...Burner
Claims (1)
体に結合されている双方向引抜型水平連鋳機の耐火物予
熱方法において、前記タンディッシュを燃焼ガスにて予
熱し、同時にインジェクターを使用して前記燃焼ガスを
フィードノズルを経て吸引してフィードノズルを予熱し
、排ガスを鋳型と接触させずに系外に排出することを特
徴とする双方向引抜型水平連鋳機の耐火物予熱方法。 （２）ｄ＿０・・・フィードノズルの内径 ｄ＿１・・・フィードノズルの直下に対応するインジェ
クターの垂直方向のガス吸込口の内径 ｄ＿２・・・フィードノズルの下面と前記ガス吸込口の
上面との空隙距離 ｄ＿３・・・インジェクターの水平部内径 Ｈ・・・鋳型の内部高さ とするとき、 ｄ＿０＜ｄ＿１・・・・・・・・・・・
・・・・（１） ｄ＿０＜ｄ＿３＜Ｈ・・・・・・・・・・・・（２） ０．１ｃｍ＜ｄ＿２＜４ｃｍ・・・・・・・・・・・・
（３） なる３式を同時に満足するように制御する請求項１記載
の双方向引抜型水平連鋳機の耐火物予熱方法。[Scope of Claims] (1) In a refractory preheating method for a bidirectional drawing type horizontal continuous casting machine in which a tundish, a feed nozzle, and a mold are integrally connected, the tundish is preheated with combustion gas, and at the same time Fire resistance of a bi-directional drawing type horizontal continuous casting machine characterized by using an injector to suck the combustion gas through a feed nozzle to preheat the feed nozzle, and exhaust the exhaust gas out of the system without contacting the mold. How to preheat things. (2) d_0... Inner diameter of the feed nozzle d_1... Inner diameter of the vertical gas suction port of the injector corresponding to the position immediately below the feed nozzle d_2... Gap between the bottom surface of the feed nozzle and the top surface of the gas suction port Distance d_3...Horizontal inner diameter of the injector H...Inner height of the mold, d_0<d_1......
・・・・・・(1) d_0<d_3<H・・・・・・・・・・・・(2) 0.1cm<d_2<4cm・・・・・・・・・・・・
The refractory preheating method for a bidirectional drawing type horizontal continuous casting machine according to claim 1, wherein the method is controlled so as to simultaneously satisfy the following three equations (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8656588A JPH01258851A (en) | 1988-04-08 | 1988-04-08 | Method for preheating refractory for bidirectional drawing type horizontal continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8656588A JPH01258851A (en) | 1988-04-08 | 1988-04-08 | Method for preheating refractory for bidirectional drawing type horizontal continuous casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01258851A true JPH01258851A (en) | 1989-10-16 |
Family
ID=13890535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8656588A Pending JPH01258851A (en) | 1988-04-08 | 1988-04-08 | Method for preheating refractory for bidirectional drawing type horizontal continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01258851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345388B1 (en) | 1996-01-26 | 2002-02-05 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for transmitting and receiving television signal |
-
1988
- 1988-04-08 JP JP8656588A patent/JPH01258851A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345388B1 (en) | 1996-01-26 | 2002-02-05 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for transmitting and receiving television signal |
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